CN105451635A - Light source device and endoscope device - Google Patents
Light source device and endoscope device Download PDFInfo
- Publication number
- CN105451635A CN105451635A CN201480044993.0A CN201480044993A CN105451635A CN 105451635 A CN105451635 A CN 105451635A CN 201480044993 A CN201480044993 A CN 201480044993A CN 105451635 A CN105451635 A CN 105451635A
- Authority
- CN
- China
- Prior art keywords
- light
- cooling element
- emitting component
- drive singal
- emitting elements
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/50—Circuit arrangements for operating light-emitting diodes [LED] responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective circuits
- H05B45/56—Circuit arrangements for operating light-emitting diodes [LED] responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective circuits involving measures to prevent abnormal temperature of the LEDs
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/00002—Operational features of endoscopes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/00002—Operational features of endoscopes
- A61B1/00004—Operational features of endoscopes characterised by electronic signal processing
- A61B1/00006—Operational features of endoscopes characterised by electronic signal processing of control signals
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/06—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor with illuminating arrangements
- A61B1/0655—Control therefor
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/06—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor with illuminating arrangements
- A61B1/0661—Endoscope light sources
- A61B1/0684—Endoscope light sources using light emitting diodes [LED]
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/12—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor with cooling or rinsing arrangements
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/12—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor with cooling or rinsing arrangements
- A61B1/128—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor with cooling or rinsing arrangements provided with means for regulating temperature
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
- F21V29/50—Cooling arrangements
- F21V29/54—Cooling arrangements using thermoelectric means, e.g. Peltier elements
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B23/00—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
- G02B23/24—Instruments or systems for viewing the inside of hollow bodies, e.g. fibrescopes
- G02B23/2407—Optical details
- G02B23/2461—Illumination
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/56—Cameras or camera modules comprising electronic image sensors; Control thereof provided with illuminating means
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/57—Mechanical or electrical details of cameras or camera modules specially adapted for being embedded in other devices
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/70—Circuitry for compensating brightness variation in the scene
- H04N23/74—Circuitry for compensating brightness variation in the scene by influencing the scene brightness using illuminating means
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/10—Controlling the intensity of the light
- H05B45/12—Controlling the intensity of the light using optical feedback
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/50—Constructional details
- H04N23/555—Constructional details for picking-up images in sites, inaccessible due to their dimensions or hazardous conditions, e.g. endoscopes or borescopes
Abstract
The light source device of the present invention is provided with a semiconductor light-emitting element, a cooling element configured so as to be capable of cooling the semiconductor light-emitting element, a light-emitting element driving unit for supplying a light-emitting element driving signal to the semiconductor light-emitting element, a cooling element driving unit for supplying a cooling element driving signal to the cooling element, a light-emitting element drive control unit for setting the duty ratio of the light-emitting element driving signal and controlling the amount of light emitted by the semiconductor light-emitting element, a temperature sensor for measuring the temperature of the semiconductor light-emitting element, and a cooling element drive control unit for controlling the cooling element driving unit to generate a cooling element driving signal having the same duty ratio as the light-emitting element driving signal set by the light-emitting element drive control unit and having a timing synchronized with the light-emitting element driving signal, and controlling the cooling element driving unit so that the signal level of the cooling element driving signal is adjusted on the basis of the result of measurement by the temperature sensor.
Description
Technical field
The present invention relates to the light supply apparatus and endoscope apparatus that are suitable for endoscope.
Background technology
In the past, widely use elongated endoscope to be inserted in body cavity etc. and carry out the observation at tested position or the endoscope of various disposal.In this endoscope, adopt light supply apparatus to carry out the shooting of intracavity.In recent years, use have employed the light supply apparatus of the semiconductor light sources such as LED as illuminating part sometimes.This light supply apparatus can control by making the PWM of the change in duty cycle of driving pulse or Current Control that LED current is changed carries out brightness adjustment control to LED.
The light supply apparatus that make use of such LED light source generates heat according to luminous quantity, and light quantity changes according to the variations in temperature of adstante febre.Therefore, in Japanese Unexamined Patent Publication 2007-149469 publication (hereinafter referred to as document 1), the device utilizing Peltier element to carry out cooling LED is disclosed.The device of document 1 drives Peltier element, thereby, it is possible to follow the heating of the LED that pulse is lighted and cool by the periodic pulse current that rising edge is more Zao than the rising edge of the pulse current of the drive current of LED.
But the LED light source in the motion of document 1 adopts in the display device or projector of direct viewing type, light quantity change is smaller.On the other hand, in the light source that endoscope adopts, cause the change of illumination light quantity larger due to observing pattern, the change of the caloric value of LED light source is also larger.Therefore, even if adopt the motion of document 1, also there are the following problems: the cooling can not carrying out the variations in temperature of following LED light source controls, and brings bad impact owing to cooling deficiency or produces condensation due to supercooling the life-span etc. of LED.
Even if the object of the present invention is to provide a kind of when light quantity change and variations in temperature greatly also can carry out light supply apparatus and the endoscope apparatus of the superior cooling of tracing ability relative to variations in temperature.
Summary of the invention
For solving the means of problem
Light supply apparatus of the present invention has: semiconductor light-emitting elements; Cooling element, consists of and can cool described semiconductor light-emitting elements; Light-emitting component drive division, light-emitting component drive singal is supplied to described semiconductor light-emitting elements by it, and this light-emitting component drive singal is used for making described semiconductor light-emitting elements penetrate light; Cooling element drive division, cooling element drive singal is supplied to described cooling element by it, and this cooling element drive singal is used for described cooling element is cooled described semiconductor light-emitting elements; Light-emitting component drive control part, it sets the dutycycle of described light-emitting component drive singal and controls the luminous quantity of described semiconductor light-emitting elements; Temperature sensor, it measures the temperature of described semiconductor light-emitting elements; And cooling element drive control part, it controls described cooling element drive division, there is the dutycycle identical with the dutycycle of the described light-emitting component drive singal set by described light-emitting component drive control part and the described cooling element drive singal with the timing synchronous with described light-emitting component drive singal to generate, and, described cooling element drive division is controlled, makes to adjust according to the signal level of measurement result to described cooling element drive singal of described temperature sensor.
Further, light supply apparatus of the present invention has: multiple semiconductor light-emitting elements, and they produce the light of multiple color; Multiple cooling element, they are configured to cool described multiple semiconductor light-emitting elements respectively; Light-emitting component drive division, multiple light-emitting component drive singal is supplied to described multiple semiconductor light-emitting elements by respectively, and the plurality of light-emitting component drive singal is used for making described multiple semiconductor light-emitting elements injection light; Cooling element drive division, multiple cooling element drive singal is supplied to described multiple cooling element by respectively, and the plurality of cooling element drive singal is used for respectively described multiple cooling element being cooled to described multiple semiconductor light-emitting elements; Light-emitting component drive control part, it sets the dutycycle of described multiple light-emitting component drive singal and controls separately the luminous quantity of described multiple semiconductor light-emitting elements; Multiple temperature sensor, it measures separately the temperature of described multiple semiconductor light-emitting elements; And cooling element drive control part, it controls described cooling element drive division, there is the dutycycle identical respectively with the dutycycle of the described multiple light-emitting component drive singal set by described light-emitting component drive control part and described multiple cooling element drive singal with the timing synchronous respectively with described multiple light-emitting component drive singal to generate, and, described cooling element drive division is controlled, makes to adjust the signal level of described multiple cooling element drive singal respectively according to the measurement result of described multiple temperature sensor.
Further, endoscope apparatus of the present invention has: endoscope; Semiconductor light-emitting elements, its generation is supplied to described illumination for endoscope light; Cooling element, consists of and can cool described semiconductor light-emitting elements; Light-emitting component drive division, light-emitting component drive singal is supplied to described semiconductor light-emitting elements by it, and this light-emitting component drive singal is used for making described semiconductor light-emitting elements penetrate light; Cooling element drive division, cooling element drive singal is supplied to described cooling element by it, and this cooling element drive singal is used for described cooling element is cooled described semiconductor light-emitting elements; Light-emitting component drive control part, it sets the dutycycle of described light-emitting component drive singal and controls the luminous quantity of described semiconductor light-emitting elements; Temperature sensor, it measures the temperature of described semiconductor light-emitting elements; And cooling element drive control part, it controls described cooling element drive division, there is the dutycycle identical with the dutycycle of the described light-emitting component drive singal set by described light-emitting component drive control part and the described cooling element drive singal with the timing synchronous with described light-emitting component drive singal to generate, and, described cooling element drive division is controlled, makes to adjust according to the signal level of measurement result to described cooling element drive singal of described temperature sensor.
Accompanying drawing explanation
Fig. 1 is the block diagram of the light supply apparatus that an embodiment of the invention are shown.
Fig. 2 be for illustration of embodiment light modulation and cooling control flow chart.
Fig. 3 is for illustration of being supplied to the pwm pulse of R-LED42 and being supplied to the key diagram of drive current of Peltier element 56.
Fig. 4 is the figure of the structure of the LED light source that the impact being not easy to be condensed is shown.
Fig. 5 is the figure of the example of other structures of the LED light source that the impact being not easy to be condensed is shown.
Fig. 6 is the figure of the example of other structures of the LED light source that the impact being not easy to be condensed is shown.
Detailed description of the invention
Below, with reference to accompanying drawing, embodiments of the present invention are described in detail.
Fig. 1 is the block diagram of the light supply apparatus that an embodiment of the invention are shown.In the present embodiment, light supply apparatus is applied to the endoscopic system with endoscope, video processor and monitor.
Endoscopic system 1 is made up of endoscope 10, video processor 20, monitor 30 and light supply apparatus 40.Endoscope 10 has the elongated insertion section 11 that can be inserted into and wait in tube chamber in front, by adapter 12, dismounting is connected with light supply apparatus 40 base end side freely.
Further, endoscope 10 by cable 17 with adapter 18 and dismounting is connected with video processor 20 freely.Like this, different types of endoscope can be assembled on light supply apparatus 40 and video processor 20.
The imaging apparatus 13 for taking the image of subject such as in tube chamber and the lens 14 for making the illumination from light supply apparatus 40 penetrate subject are equipped in the front end of insertion section 11.Scioptics 14 pairs of subjects irradiate the illumination light transmitted via photoconduction 15 from light supply apparatus 40.Imaging apparatus 13 is made up of CCD or cmos sensor etc., and the back light from subject incides imaging surface, carries out opto-electronic conversion to incident subject optical image, and the shooting exported successively based on accumulated electric charge exports.
Imaging apparatus 13 is provided from video processor 20 drive singal that comprises synchronizing signal and carries out action, shooting is exported and is supplied to video processor 20 via holding wire 16.
Video processor 20 exports the signal processing of enforcement regulation to shooting and generates the signal of video signal that can be presented in monitor 30.Signal of video signal from video processor 20 is supplied to monitor 30 via cable 21.Like this, the endoscopic images exported based on shooting can be shown in the display frame of monitor 30.
Further, video processor 20 can control light supply apparatus 40, makes the lightness of photographed images become target lightness.The information of the ratio of the lightness obtained from photographed images and target lightness is exported to light supply apparatus 40 as lightness control information by video processor 20.Lightness control information is provided to the control part 41 of light supply apparatus 40 via cable 22.
Light supply apparatus 40 has the LED (R-LED) 42 producing red light, the LED (G-LED) 43 producing green light, produces the LED (B-LED) 44 of blue light and produce the LED (V-LED) 45 of purple light.In addition, in the present embodiment, the example of the LED adopting the light of generation 4 kinds of colors is described, but color category and number of colors are not limited to present embodiment, such as, also can add the LED producing amber (brown) light in FIG.
The optical axis of the emergent light of each LED42 ~ 45 is configured with lens 42a ~ 45a respectively.The emergent light of LED42 ~ 45 is converted to almost parallel light and penetrates by each lens 42a ~ 45a respectively.The optical axis of lens 42a shooting out the light from R-LED42 is configured with the dichroic filter 47 ~ 49 forming light path portion.Also the light from G-LED43 is had via lens 43a incidence in dichroic filter 47.Further, in dichroic filter 48, also there is the light from B-LED44 via lens 44a incidence, in dichroic filter 49, also have the light from V-LED45 via lens 45a incidence.
Dichroic filter 47 makes the luminous reflectance from G-LED43 and makes the Transmission light from R-LED42.Dichroic filter 48 makes the luminous reflectance from B-LED44 and makes the transillumination transmission of dichroic filter 47.Dichroic filter 49 makes the luminous reflectance from V-LED45 and makes the transillumination transmission of dichroic filter 48.
Like this, the light of LED42 ~ 45 is synthesized by dichroic filter 47 ~ 49.Synthesis light from dichroic filter 49 incides photoconduction 15 via lens 50.In addition, by suitably setting the characteristic of dichroic filter 47 ~ 49, the configuration sequence of LED42 ~ 45 also can be changed, but, easily the characteristic of dichroic filter is set according to subband order configuration LED42 ~ 45 item of emergent light.
Each LED42 ~ 45 are driven by LED drive division 46 and light.LED drive division 46 is controlled by control part 41, produces the pwm pulse as being used for the drive singal that each LED drives.In addition, luminescence is carried out with the luminous quantity that the dutycycle and the magnitude of current with the pwm pulse from LED drive division 46 is corresponding in each LED42 ~ 45.Control part 41, by controlling being used for exporting to the dutycycle of LED drive division 46 to pwm pulse to the dimming information that each LED42 ~ 45 control, carries out brightness adjustment control to each LED42 ~ 45.
Control part 41 produces dimming information, makes the luminous quantity of each LED42 ~ 45 can maintain the colour balance of regulation.The colour balance of each LED42 ~ 45 needs to determine according to the spectral sensitivity characteristic of endoscope 10.The information in order to obtain the light amount ratio that optimum color balance produces according to the spectral sensitivity characteristic of endoscope 10 in each LED42 ~ 45 is stored in the memory section 51 of light supply apparatus 40.The information of the light amount ratio that control part 41 stores according to memory section 51 exports to LED drive division 46 by being used for the control information that each LED42 ~ 45 control.
In addition, the information of light amount ratio of each LED stored in memory section 51 for obtaining optimum color balance is illustrated, but also can reads the information relevant with this light amount ratio from endoscope 10 by endoscope 10 being assemblied in video processor 20 or light supply apparatus 40 and being set in control part 41.
Further, in order to obtain optimum color balance, as long as input the information of the light amount ratio of each LED to control part 41, not that storage part 51 must be set.Light supply apparatus 40 is provided with guidance panel 52, and the signal based on user operation can be exported to control part 41 by guidance panel 52.By using this guidance panel 52, the information of light amount ratio also can be inputted.Further, in guidance panel 52, be provided with not shown display part, current setting value etc. can be shown.
Control part 41, according to the lightness control information from video processor 20, maintains the light amount ratio obtaining optimum color balance, and controls the light quantity of each LED42 ~ 45.Such as, the dimming information corresponding with the light value of the G-LED43 that should set according to lightness control information is made to be stored in memory section 51, the dimming information that can be obtained for controlling G-LED43 by the dimming information according to storage in lightness control information reading memory section 51 in control part 41.Further, control part 41 can according to the information of the light amount ratio stored by memory section 51 obtain other LED42,44, the dimming information of 45.
The dimming information that control part 41 is tried to achieve is for controlling the dutycycle of the pwm pulse being supplied to each LED42 ~ 45.LED drive division 46 produces the pwm pulse of the dutycycle of being specified by dimming information and is supplied to each LED42 ~ 45.Thus, pulsed drive is carried out according to the dutycycle based on lightness control information and light amount ratio thus lightness is desirably luminous in each LED42 ~ 45.
In the present embodiment, in order to cool, the Peltier element 56 as thermoelectric conversion element is installed on R-LED42.R-LED42 has not shown substrate and is configured at the illuminating part on substrate, such as, is equipped with Peltier element 56 in the rear side of substrate.Peltier element 56 be make use of produced by the electric current that flows through in pn knot heat absorption, exotherm cooling-part, abutted by the back side of the substrate of the cooling surface with R-LED42 that make Peltier element 56 and cool R-LED42.
The cooling effect of Peltier element 56 is controlled by the current value of the drive current flow through in Peltier element 56.Peltier drive division 55 is controlled by control part 41, controls the cooling of R-LED42 by controlling the current value of the drive current flow through in Peltier element 56.
In the present embodiment, control signal is exported to Peltier drive division 55 by control part 41, makes in Peltier element 56, to flow through the dutycycle consistent with the dutycycle of the pwm pulse driving R-LED42 and the electric current synchronous with pwm pulse.That is, flow through the LED current of pulse type in R-LED42 during, in Peltier element 56, flow through drive current and play cooling effect.Like this, in the present embodiment, due to the driving of R-LED42 and the driving Complete Synchronization of Peltier element, so carry out the cooling based on Peltier element 56 during R-LED42 lights and generates heat, therefore, it is possible to suppress the temperature caused by the luminescence of R-LED42 to rise.
But, in endoscope illumination purposes, the luminous quantity significant change such as pattern according to the observation of R-LED42.Therefore, the situation based on the insufficient situation of the cooling effect of Peltier element 56 or undercooling may be produced.
Therefore, in the present embodiment, the temperature of reality measured and control according to the current value of measurement result to the drive current of Peltier element 56.Critesistor 53,54 is set in light supply apparatus 40.Critesistor 53 is disposed near R-LED42, measures and measurement result is exported to control part 41 to the temperature near R-LED42.Further, critesistor 54 is configured in the suitable position in the housing of light supply apparatus 40, measures and measurement result is exported to control part 41 to temperature in housing (room temperature).
Control part 41 is given the measurement result of temperature from critesistor 53,54, and controls according to the current value of measurement result to the drive current of Peltier element 56 of temperature.Such as, control part 41 controls, and make the current value of the drive current of the higher then Peltier element 56 of temperature near from the R-LED42 of critesistor 53 larger, the current value of the lower then drive current of temperature is less.Further, such as, control part 41 also can use the drive current of the measurement result of the temperature of critesistor 54 to Peltier element 56 to control.Such as, control part 41 also can control according to the drive current of mode to Peltier element 56 that the temperature made near R-LED42 is low unlike the room temperature obtained by critesistor 54.
In addition, the light quantity of R-LED42 changes than significantly according to the temperature of node (quasiconductor P-n ties), and when high temperature, light quantity significantly reduces.Therefore, as redness, need R-LED42 to be cooled near dew point temperature in order to ensure the light quantity of abundance.Like this, R-LED42, compared with LED43 ~ 45 of other colors, easily by the impact of temperature, needs to cool fully.Therefore, in the present embodiment, show the example only configuring Peltier element 56 on R-LED42, but also obviously Peltier element can be set on whole or a part of LED of other LED43 ~ 45.In this case, also with driving the driving pulse Complete Synchronization of each LED drive current is flow through in each Peltier element, and determine the current value of the drive current being supplied to each Peltier element according to temperature in the temperature measurement result of the critesistor be configured near each LED and housing etc.
Then, with reference to Fig. 2 and Fig. 3, the action of the embodiment formed like this is described.Fig. 2 be for illustration of embodiment light modulation and cooling control flow chart.Further, Fig. 3 is for illustration of being supplied to the pwm pulse of R-LED42 and being supplied to the key diagram of drive current of Peltier element 56.
When connecting the power supply of light supply apparatus 40, control part 41 obtains the information (step S1) of light amount ratio from memory section 51.In step s 2, control part 41 obtains the lightness control information from video processor 20.Control part 41 is according to lightness information access control memory section 51, obtain the controlling value (dutycycle) for controlling the G-LED43 as benchmark, further, according to the information of light amount ratio calculate other LED42,44, the dutycycle (step S4) of 45.
Control part 41 generates the dimming information (step S4) being used to specify calculated dutycycle for each LED42 ~ 45, and outputs it to LED drive division 46 (step S5).LED drive division 46 produces the pwm pulse of the dutycycle based on dimming information, and provides it to each LED42 ~ 45.Thus, LED42 ~ 45 produce the light based on the light quantity of dimming information.The emergent light of LED42 ~ 45 synthesizes by dichroic filter 47 ~ 49, incides photoconduction 15 as illumination light via lens 50.The illumination light transmitted in photoconduction 15 is irradiated from lens 14 pairs of subjects.
Imaging apparatus 13 accepts the reflected light from subject and carries out opto-electronic conversion, obtains photographed images.This photographed images is provided to video processor 20 via holding wire 16.Video processor 20 pairs of photographed images are implemented the signal processing of regulation and generate signal of video signal, and are supplied to monitor 30 via cable 21.Like this, the display frame of monitor 30 shows endoscopic images.
Further, video processor 20 produces lightness control information by the lightness of photographed images and the comparison of target lightness.Such as, video processor 20 produces lightness control information according to each field (field), and outputs it to the control part 41 of light supply apparatus 40.
Like this, such as, control part 41 produces dimming information according to each field according to lightness control information, and the light quantity of carrying out the illumination light controlling the synthesis light made based on the emergent light from LED42 ~ 45 arrives target lightness.
Further, in step s 6, control part 41 is from temperature in the temperature near critesistor 53,54 acquisition R-LED42 and housing.Control part 41 produces the control signal for generation of drive current and outputs it to Peltier drive division 55 (step S7), wherein, this drive current has the same duty cycle synchronous with the rising edge of the pwm pulse being supplied to R-LED42 and trailing edge, and has the current value corresponding with the temperature obtained in step s 6.
Peltier drive division 55 is controlled by the control signal from control part 41, produces the drive current of Peltier element 56.This drives a current through Peltier element 56, and the cooling surface of Peltier element 56 is cooled.Such as, also can be as the example of Fig. 2, control part 41 obtains temperature according to the cycle that the generation cycle with lightness control information is identical, produces control signal.In this case, such as, control part 41 produces the control signal for controlling drive current according to the temperature obtained according to each, and carries out controlling to make the temperature near R-LED42 arrive the target temperature of regulation.
The label IL of Fig. 3 represents the pwm pulse being supplied to R-LED42, and label IP represents drive current.As shown in Figure 3, drive current is synchronous with pwm pulse, during flowing through LED current, that is, in during identical with between the light emission period of R-LED42, in Peltier element 56, flows through drive current in R-LED42.Thus, if R-LED42 is luminous and generate heat, then cooled by Peltier element 56.Further, the current value of drive current changes according to the temperature of critesistor 53,54, and the temperature near R-LED42 can be made to be maintained constant.
In the example in figure 3, if the dutycycle being supplied to the pwm pulse of R-LED42 diminishes, luminous quantity reduces, temperature step-down near R-LED42, then drive current also step-down, cooling effect is suppressed, its result, the temperature near R-LED42 is maintained constant.
Such as, when the observation scene based on endoscope 10 changes from far point towards near point, the lightness undertaken by control part 41 is controlled, and the light quantity of R-LED42 reduces sharp, and caloric value also reduces sharp.Owing to also synchronously producing the drive current of Peltier element 56 with the pwm pulse of R-LED42 in this case, and the current value of drive current reduces sharp according to the measurement result of critesistor 53,54, so the cooling effect of Peltier element 56 reduces, can prevent the temperature near R-LED42 from becoming too low.Thereby, it is possible to stop the generation of the condensation caused due to the supercool of LED.
Further, on the contrary, when the observation scene based on endoscope 10 changes near point towards far point, increase corresponding to LED light amount, caloric value also increases sharp.Because the current value of drive current in this case also increases sharp according to the measurement result of critesistor 53,54, so the cooling effect of Peltier element 56 uprises sharp, can prevent the temperature near R-LED42 from becoming too high.
Like this, in the present embodiment, make electric current flow through Peltier element for cooling corresponding LED in the timing consistent with the driving pulse of LED, and determine the current value of the drive current of each Peltier element according to temperature in the temperature near each LED and housing.Thus, owing to carrying out the cooling based on Peltier element between the light emission period of LED, and control the cooling effect of Peltier element according to temperature in the temperature near each LED and housing, control so cooling can be carried out, make the temperature that each LED becomes suitable.Thus, though when light quantity change and variations in temperature greatly also can carry out the superior cooling of traceability relative to variations in temperature.
But under high humidity environment, dew point temperature is higher, easily produces condensation.Such as, when humidity is about 85RH%, the surface of LED easily becomes below dew point temperature, easily produces condensation.When producing condensation on the surface of LED, easily become the reason of the reduction of outgoing light quantity or fault.Therefore, adopt the structure being not easy the impact condensed as the structure of LED light source.
(the 1st example)
Fig. 4 shows the structure be not easy by the LED light source affected that condenses, and (a) in Fig. 4 is side view, and (b) in Fig. 4 is top view.By arrow, gravity direction is shown in the diagram.LED61 has substrate 61b and is configured at the illuminating part 61a on the front surface of substrate 61b.Peltier element 63 (oblique line portion) is equipped with across thermal diffusion plate 62 in the substrate 61b rear side of LED61.Peltier element 63 is configured on radiator 64, and cooling surface (upper surface and side) 63a side is covered by thermal diffusion plate 62.That is, the cooling surface 63a of Peltier element 63 abuts with thermal diffusion plate 62, and radiating surface (bottom surface) 63b abuts with radiator 64.
By flowing through drive current in Peltier element 63, make heat be delivered to radiating surface 63b from the cooling surface 63a of Peltier element 63, cooling surface 63a is cooled.The heat that LED-baseplate 61b produces is delivered to the cooling surface 63a of cooled Peltier element 63 via the thermal diffusion plate 62 at the substrate 61b back side, and, be delivered to radiator 64 from the radiating surface 63b of Peltier element 63 and dispelled the heat.Thereby, it is possible to make the temperature of LED61 reduce.
Further, radiator 64 is provided with the seal member 66 forming sealing area 65, and the Peltier element 63 be disposed on radiator 64, thermal diffusion plate 62 and LED61 surround by sealing parts 66.Seal member 66 forms lens section 66a in the position that the illuminating part 61a with LED61 is opposed, can make the illumination of self-luminescent part 61a to be mapped to the outside of sealing area 65.In addition, transparent component also can be used to omit lens section 66a to form seal member 66.
In the example in fig. 4, a part of region of the below of the gravity direction of Peltier element 63 is not covered by thermal diffusion plate 62, and cooling surface 63a exposes in a part of region and forms air exposed surface 67 in sealing area 65.
In the LED light source formed like this, by flowing through the cooling that drive current carries out LED-baseplate 61b in Peltier element 63.Peltier element 63 cools via thermal diffusion plate 62 couples of LED-baseplate 61b, and relative to the cooling surface 63a of Peltier element 63, the temperature of LED-baseplate 61b is high.Therefore, when carrying out the driving of Peltier element 63, the air exposed surface 67 as a part of the cooling surface 63a of Peltier element 63 is lower than LED-baseplate 61b temperature.
In sealing area 65, first the part being below dew point temperature in surface temperature produces condensation, have accumulated the water droplet produced by condensing in the position that this condensation produces.In the example in fig. 4, when carrying out the driving of Peltier element 63, in sealing area 65, cooling surface 63a is reduced to minimum temperature.Therefore, when producing condensation, in air exposed surface 67, first produce the water droplet (oblique line portion and netting twine portion) 68 based on condensation.Further, owing to making the major part of the total moisture amount in sealing area 65 gather near this air exposed surface 67 by producing condensation in air exposed surface 67, the humidity therefore in sealing area 65 reduces.Thus, in sealing area 65, dew point temperature step-down, the part beyond air exposed surface 67 is not easy to produce condensation very much, does not produce condensation in LED61 part.
Further, because air exposed surface 67 is positioned at the bottom side of the gravity direction of sealing area 65, so the water droplet 68 gathering this part is not easy to move to other parts.Its result, can reliably prevent from LED61, adhere to the water droplet based on condensation.
In addition, consider to adopt high thermal resistance parts as thermal diffusion plate 62.In this case, the temperature difference between cooling surface 63a and LED-baseplate 61b becomes large further.That is, compared with the temperature of LED61, the further step-down of temperature of air exposed surface 67.Thus, become near air exposed surface 67 and more easily produce condensation, and can prevent from further producing condensation on LED61.
(the 2nd example)
Fig. 5 shows the example of other the structure be not easy by the LED light source affected that condenses, and (a) in Fig. 5 is side view, and (b) in Fig. 5 is top view.Also gravity direction is shown by arrow in Figure 5.LED61 has substrate 61b and is configured at the illuminating part 61a on the front surface of substrate 61b.Peltier element 73 (oblique line portion) is equipped with across thermal diffusion plate 72 in the substrate 61b rear side of LED61.Peltier element 73 is configured on radiator 75, and cooling surface (upper surface and side) 73a side is covered by thermal diffusion plate 72.That is, the cooling surface 73a of Peltier element 73 abuts with thermal diffusion plate 72, and radiating surface (bottom surface) 73b abuts with radiator 75.
By flowing through drive current in Peltier element 73, heat is passed to radiating surface 73b from the cooling surface 73a of Peltier element 73, and cooling surface 73a is cooled.The heat that LED-baseplate 61b produces is delivered to the cooling surface 73a of cooled Peltier element 73 via the thermal diffusion plate 72 at the substrate 61b back side, and, be delivered to radiator 75 from the radiating surface 73b of Peltier element 73 and dispelled the heat.Thereby, it is possible to make the temperature of LED61 reduce.
Further, radiator 75 is provided with the seal member 77 forming sealing area 76, and the Peltier element 73 be disposed on radiator 75, thermal diffusion plate 72 and LED61 surround by sealing parts 77.Seal member 77 forms lens section 77a in the position that the illuminating part 61a with LED61 is opposed, can make the illumination of self-luminescent part 61a to be mapped to the outside of sealing area 76.In addition, transparent component also can be used to omit lens section 77a to form seal member 77.
In the example of fig. 5, in a part of region of the below of the gravity direction in sealing area 76, be equipped and in sealing area 76, expose cooling surface (upper surface and side) and the Peltier element 74 forming air exposed surface 78.The radiating surface (bottom surface) of Peltier element 74 abuts with radiator 75.
In the LED light source formed like this, by flowing through the cooling that drive current carries out LED-baseplate 61b in Peltier element 73.Further, cool by flowing through the cooling surface of drive current to Peltier element 74 in Peltier element 74.Peltier element 73 cools via thermal diffusion plate 72 couples of LED-baseplate 61b, and relative to the cooling surface 73a of Peltier element 73, the temperature of LED-baseplate 61b is high.Therefore, if the cooling effect of Peltier element 74 Peltier element 73 cooling effect equal more than, then when carrying out the driving of Peltier element 73,74, the air exposed surface 78 as the cooling surface of Peltier element 74 is lower than LED-baseplate 61b temperature.
In sealing area 76, first the part being below dew point temperature in surface temperature produces condensation, have accumulated the water droplet produced by condensing in the position that this condensation produces.Therefore, in the example of fig. 5, when producing condensation, in air exposed surface 78, the water droplet (oblique line portion and netting twine portion) 79 based on condensation is first produced.Further, owing to making the major part of the total moisture amount in sealing area 76 gather near this air exposed surface 78, because this reducing the humidity in sealing area 76 by producing condensation in air exposed surface 78.Thus, in sealing area 76, the part beyond air exposed surface 78 is not easy to produce condensation very much, does not produce condensation in the part of LED61.
Further, because air exposed surface 78 is positioned at the bottom side of the gravity direction of sealing area 76, so the water droplet 79 being gathered in this part is not easy to move to other parts.Its result, can reliably prevent from LED61, adhere to the water droplet based on condensation.
(the 3rd example)
Fig. 6 shows the example of other the structure be not easy by the LED light source affected that condenses, and (a) in Fig. 6 is side view, and (b) in Fig. 6 is top view.Also gravity direction is shown by arrow in figure 6.3rd example is only different from the 2nd example of Fig. 5 on set temperature with humidity sensor 81 this point.Temperature and moisture sensors 81 can be measured the temperature and humidity near LED61.The measurement result of temperature and moisture sensors 81 is provided to not shown control part Peltier element 73,74 being carried out to drived control.This control part only drives Peltier element 73 in an initial condition.
Control part obtains dew point temperature according to the temperature and humidity of measurement result, judges whether the temperature near LED61 is below dew point temperature.The temperature of control part only near LED61 drives Peltier element 74 when being below dew point temperature.Thus, first air exposed surface 78 part of Peltier element 74 becomes below dew point temperature, in this air exposed surface 78, produce condensation.Thereby, it is possible to prevent the generation of the condensation in LED61.
The present invention is not directly defined in the respective embodiments described above, can implementation phase in the scope not departing from its purport, element be out of shape and specialize.Further, various invention can be formed by the suitable combination of the multiple elements disclosed in the respective embodiments described above.Such as, the several elements in the whole elements shown by embodiment can be deleted.Further, also can suitably combine the element of different embodiments.
[remarks]
1. a light supply apparatus, is characterized in that, this light supply apparatus has:
Semiconductor light-emitting elements;
Cooling element, it has and is carried out temperature controlled cooling surface, cools described semiconductor light-emitting elements;
Thermal diffusion parts, it is set to cover the described cooling surface beyond the part on the downside of the gravity direction of described cooling element, between described semiconductor light-emitting elements and described cooling element, by the heat conduction that produces in described semiconductor light-emitting elements to described cooling surface; And
Seal member, described semiconductor light-emitting elements, described cooling element and described thermal diffusion parts are accommodated in airtight space by it.
2. a light supply apparatus, is characterized in that, this light supply apparatus has:
Semiconductor light-emitting elements;
1st cooling element, it has and is carried out temperature controlled 1st cooling surface, cools described semiconductor light-emitting elements;
Thermal diffusion parts, it is set to cover described 1st cooling surface, between described semiconductor light-emitting elements and described 1st cooling element, by the heat conduction that produces in described semiconductor light-emitting elements to described 1st cooling surface;
Seal member, described semiconductor light-emitting elements, described 1st cooling element and described thermal diffusion parts are accommodated in airtight space by it; And
2nd cooling element, it is configured on the downside of the gravity direction of the described semiconductor light-emitting elements in described airtight space, has and is carried out temperature controlled 2nd cooling surface, is carried out the cooling of described airtight space by described 2nd cooling surface.
The application to carry out for the basis of claim of priority applying in No. 2013-173570, the Japanese Patent Application of Japanese publication with on August 23rd, 2013, and above-mentioned disclosure is referred in present specification, claims and accompanying drawing.
Claims (7)
1. a light supply apparatus, is characterized in that, this light supply apparatus has:
Semiconductor light-emitting elements;
Cooling element, consists of and can cool described semiconductor light-emitting elements;
Light-emitting component drive division, light-emitting component drive singal is supplied to described semiconductor light-emitting elements by it, and this light-emitting component drive singal is used for making described semiconductor light-emitting elements penetrate light;
Cooling element drive division, cooling element drive singal is supplied to described cooling element by it, and this cooling element drive singal is used for described cooling element is cooled described semiconductor light-emitting elements;
Light-emitting component drive control part, it sets the dutycycle of described light-emitting component drive singal and controls the luminous quantity of described semiconductor light-emitting elements;
Temperature sensor, it measures the temperature of described semiconductor light-emitting elements; And
Cooling element drive control part, it controls described cooling element drive division, there is the dutycycle identical with the dutycycle of the described light-emitting component drive singal set by described light-emitting component drive control part and the described cooling element drive singal with the timing synchronous with described light-emitting component drive singal to generate, and, described cooling element drive division is controlled, makes to adjust according to the signal level of measurement result to described cooling element drive singal of described temperature sensor.
2. light supply apparatus according to claim 1, is characterized in that,
The signal level of described cooling element drive control part to described cooling element drive singal adjusts, and makes the measurement result of described temperature sensor within the temperature range of regulation.
3. light supply apparatus according to claim 1 and 2, is characterized in that,
This light supply apparatus has the ambient temperature sensor measured room temperature,
Described cooling element drive control part adjusts according to the signal level of measurement result to described cooling element drive singal of described temperature sensor and described ambient temperature sensor.
4. light supply apparatus according to claim 3, is characterized in that,
The signal level of described cooling element drive control part to described cooling element drive singal adjusts, and makes the measurement result of described temperature sensor higher than the measurement result of described ambient temperature sensor.
5. a light supply apparatus, is characterized in that, this light supply apparatus has:
Multiple semiconductor light-emitting elements, they produce the light of multiple color;
Multiple cooling element, they are configured to cool described multiple semiconductor light-emitting elements respectively;
Light-emitting component drive division, multiple light-emitting component drive singal is supplied to described multiple semiconductor light-emitting elements by respectively, and the plurality of light-emitting component drive singal is used for making described multiple semiconductor light-emitting elements injection light;
Cooling element drive division, multiple cooling element drive singal is supplied to described multiple cooling element by respectively, and the plurality of cooling element drive singal is used for respectively described multiple cooling element being cooled to described multiple semiconductor light-emitting elements;
Light-emitting component drive control part, it sets the dutycycle of described multiple light-emitting component drive singal and controls separately the luminous quantity of described multiple semiconductor light-emitting elements;
Multiple temperature sensor, it measures separately the temperature of described multiple semiconductor light-emitting elements; And
Cooling element drive control part, it controls described cooling element drive division, there is the dutycycle identical respectively with the dutycycle of the described multiple light-emitting component drive singal set by described light-emitting component drive control part and described multiple cooling element drive singal with the timing synchronous respectively with described multiple light-emitting component drive singal to generate, and, described cooling element drive division is controlled, makes to adjust the signal level of described multiple cooling element drive singal respectively according to the measurement result of described multiple temperature sensor.
6. an endoscope apparatus, is characterized in that, this endoscope apparatus has:
Endoscope;
Semiconductor light-emitting elements, its generation is supplied to described illumination for endoscope light;
Cooling element, consists of and can cool described semiconductor light-emitting elements;
Light-emitting component drive division, light-emitting component drive singal is supplied to described semiconductor light-emitting elements by it, and this light-emitting component drive singal is used for making described semiconductor light-emitting elements penetrate light;
Cooling element drive division, cooling element drive singal is supplied to described cooling element by it, and this cooling element drive singal is used for described cooling element is cooled described semiconductor light-emitting elements;
Light-emitting component drive control part, it sets the dutycycle of described light-emitting component drive singal and controls the luminous quantity of described semiconductor light-emitting elements;
Temperature sensor, it measures the temperature of described semiconductor light-emitting elements; And
Cooling element drive control part, it controls described cooling element drive division, there is the dutycycle identical with the dutycycle of the described light-emitting component drive singal set by described light-emitting component drive control part and the described cooling element drive singal with the timing synchronous with described light-emitting component drive singal to generate, and, described cooling element drive division is controlled, makes to adjust according to the signal level of measurement result to described cooling element drive singal of described temperature sensor.
7. endoscope apparatus according to claim 6, is characterized in that,
This endoscope apparatus has video processor, this video processor exports the signal processing of enforcement regulation to the shooting from described endoscope and generates signal of video signal, and according to making the mode becoming target lightness based on the lightness of the image of described signal of video signal control described light-emitting component drive control part, the luminous quantity of described semiconductor light-emitting elements is changed.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013-173570 | 2013-08-23 | ||
| JP2013173570 | 2013-08-23 | ||
| PCT/JP2014/071665 WO2015025849A1 (en) | 2013-08-23 | 2014-08-19 | Light source device and endoscope device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105451635A true CN105451635A (en) | 2016-03-30 |
| CN105451635B CN105451635B (en) | 2017-08-11 |
Family
ID=52483623
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201480044993.0A Active CN105451635B (en) | 2013-08-23 | 2014-08-19 | Light supply apparatus and endoscope apparatus |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US9526144B2 (en) |
| EP (1) | EP3037032B1 (en) |
| JP (1) | JP5841691B2 (en) |
| CN (1) | CN105451635B (en) |
| WO (1) | WO2015025849A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111322534A (en) * | 2020-03-31 | 2020-06-23 | 福建省闽发铝业股份有限公司 | LED lamp aluminium alloy |
| CN111629493A (en) * | 2019-02-28 | 2020-09-04 | 佳能株式会社 | Lighting device having function of cooling light emitting part and control method thereof |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7150139B2 (en) * | 2019-03-18 | 2022-10-07 | オリンパス株式会社 | Light source and endoscope system |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005277877A (en) * | 2004-03-25 | 2005-10-06 | Noritsu Koki Co Ltd | Light source unit of scanner |
| CN101711328A (en) * | 2008-01-18 | 2010-05-19 | 强生有限公司 | A ventilation and cooling device for an imaging system |
| CN101874914A (en) * | 2010-06-29 | 2010-11-03 | 深圳市雷迈科技有限公司 | Positioning system for photodynamic therapy and fluorescence diagnosis |
| JP2010258432A (en) * | 2009-03-31 | 2010-11-11 | Spectronix Corp | Device and method for driving peltier element |
| CN201731334U (en) * | 2010-06-29 | 2011-02-02 | 深圳市雷迈科技有限公司 | Multi-purpose medical light-source system |
| US20110159549A1 (en) * | 1999-05-17 | 2011-06-30 | Life Technologies Corporation | Temperature control for light-emitting diode stabilization |
| US20120123213A1 (en) * | 2010-11-16 | 2012-05-17 | Yasuhiro Seto | Illumination unit and endoscopic apparatus |
| CN102762914A (en) * | 2010-11-17 | 2012-10-31 | 中村正一 | Medical light-source device |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6732534B2 (en) * | 2000-08-03 | 2004-05-11 | Tellurex Corporation | Vehicle temperature-conditioned container with a power control circuit and a defrost circuit |
| JP4160074B2 (en) | 2005-11-25 | 2008-10-01 | 松下電器産業株式会社 | Light source device, direct-view image display device, and projection display device |
| KR101105341B1 (en) * | 2010-01-21 | 2012-01-16 | 함광근 | Floodlighting apparatus |
| EP2579239A4 (en) * | 2010-05-28 | 2016-01-20 | Nec Display Solutions Ltd | Projection display device |
| JP2012253175A (en) * | 2011-06-02 | 2012-12-20 | Mitsubishi Electric Corp | Temperature control device of light emitting element and display device using the same |
-
2014
- 2014-08-19 CN CN201480044993.0A patent/CN105451635B/en active Active
- 2014-08-19 EP EP14838690.7A patent/EP3037032B1/en active Active
- 2014-08-19 JP JP2015506034A patent/JP5841691B2/en active Active
- 2014-08-19 WO PCT/JP2014/071665 patent/WO2015025849A1/en active Application Filing
-
2016
- 2016-02-10 US US15/040,089 patent/US9526144B2/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110159549A1 (en) * | 1999-05-17 | 2011-06-30 | Life Technologies Corporation | Temperature control for light-emitting diode stabilization |
| JP2005277877A (en) * | 2004-03-25 | 2005-10-06 | Noritsu Koki Co Ltd | Light source unit of scanner |
| CN101711328A (en) * | 2008-01-18 | 2010-05-19 | 强生有限公司 | A ventilation and cooling device for an imaging system |
| JP2010258432A (en) * | 2009-03-31 | 2010-11-11 | Spectronix Corp | Device and method for driving peltier element |
| CN101874914A (en) * | 2010-06-29 | 2010-11-03 | 深圳市雷迈科技有限公司 | Positioning system for photodynamic therapy and fluorescence diagnosis |
| CN201731334U (en) * | 2010-06-29 | 2011-02-02 | 深圳市雷迈科技有限公司 | Multi-purpose medical light-source system |
| US20120123213A1 (en) * | 2010-11-16 | 2012-05-17 | Yasuhiro Seto | Illumination unit and endoscopic apparatus |
| CN102762914A (en) * | 2010-11-17 | 2012-10-31 | 中村正一 | Medical light-source device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111629493A (en) * | 2019-02-28 | 2020-09-04 | 佳能株式会社 | Lighting device having function of cooling light emitting part and control method thereof |
| CN111629493B (en) * | 2019-02-28 | 2023-05-02 | 佳能株式会社 | Lighting device having function of cooling light-emitting part and control method thereof |
| CN111322534A (en) * | 2020-03-31 | 2020-06-23 | 福建省闽发铝业股份有限公司 | LED lamp aluminium alloy |
Also Published As
| Publication number | Publication date |
|---|---|
| US9526144B2 (en) | 2016-12-20 |
| US20160157322A1 (en) | 2016-06-02 |
| CN105451635B (en) | 2017-08-11 |
| JP5841691B2 (en) | 2016-01-13 |
| EP3037032A4 (en) | 2017-03-29 |
| EP3037032B1 (en) | 2019-03-06 |
| JPWO2015025849A1 (en) | 2017-03-02 |
| WO2015025849A1 (en) | 2015-02-26 |
| EP3037032A1 (en) | 2016-06-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105407789B (en) | The method of work of endoscopic system, endoscopic system | |
| CN105451634B (en) | Light supply apparatus | |
| CN105682536A (en) | Light source unit and endoscope device | |
| US8300906B2 (en) | Operating system having an operating lamp and a camera | |
| CN102573212B (en) | Lighting unit and endoscope apparatus | |
| CN106793932B (en) | Camera system | |
| US20140052004A1 (en) | Endoscopic camera illumination system and method | |
| US20120016201A1 (en) | Endoscope beam source apparatus and endoscope system | |
| CN106714660B (en) | Endoscope apparatus | |
| CN103619234A (en) | Light source device | |
| CN103517511B (en) | Semi-conductor light source device | |
| CN102866562A (en) | Light-emitting apparatus and camera system including the same | |
| CN105451635A (en) | Light source device and endoscope device | |
| CN109310277A (en) | Medical Devices and medical apparatus system | |
| CN106455959A (en) | Imaging system | |
| JP6196691B2 (en) | Method for illuminating the environment, lighting device, and camera with lighting device | |
| US20120013726A1 (en) | Microscope Illumination Source | |
| CN109479366A (en) | The method of calibration for lighting system sensor | |
| CN102973239A (en) | Light supply device and endoscope device used for medical equipment | |
| TW200803619A (en) | Supervision of an illumination device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |